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| 1989 | ||
|---|---|---|
| 2 | Christophe Champetier: Kernels in some orientations of comparability graphs. J. Comb. Theory, Ser. B 47(1): 111-113 (1989) | |
| 1987 | ||
| 1 | Christophe Champetier: On the null-homotopy of graphs. Discrete Mathematics 64(1): 97-98 (1987) | |
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